Mold pressing mechanism applied to tower rotating type rotational molding machine

Abstract

The invention relates to the field of plastic processing and forming equipment, and discloses a mold pressing mechanism applied to a tower rotating type rotational molding machine, the mold pressing mechanism comprises a fixed annular frame, the fixed annular frame is in a circular ring shape, and four connecting plates which are annularly distributed at equal intervals are fixedly connected to the fixed annular frame; a pressing assembly outer shell is fixedly connected to the position, between every two corresponding connecting plates, of the fixed annular frame, angle pushing rods are connected to the outer side faces of the multiple pressing assembly outer shells in a threaded and inserted mode, and mounting rotating grooves are formed in the inner side faces of the multiple pressing assembly outer shells. According to the pressing mechanism, through the adjustable rotating angle block and the telescopic design, multi-dimensional accurate pressing is achieved, the pressing mechanism adapts to various insert shapes and sizes, insert displacement caused by thermal expansion is effectively prevented, machining flexibility and accuracy are improved, and meanwhile design is convenient and easy to maintain.

Description

Technical Field

[0001] The invention relates to the field of plastic processing and molding equipment, in particular to a mold pressing mechanism applied to a tower rotary type rotational molding machine. Background Art

[0002] Rotomolding molds are an indispensable and important equipment in rotational molding. Rotomolding, also known as rotational molding, is a thermoplastic plastic hollow molding method. Rotomolding molds are usually composed of upper and lower half molds, which are clamped and fixed. They are simple in design and are pressure-free molding molds. Therefore, the walls are thin and lightweight. The shape of the mold cavity is consistent with the shape of the plastic product. It is a thin-walled shell. Rotomolding molds have the advantages of low cost, flexible design, and easy switching of different products. They are widely used in automobiles, home appliances, construction, medical devices, aerospace and other industries. They are ideal for manufacturing various complex shapes, large and extra-large hollow plastic products.

[0003] The rotational molding mold needs to experience a high temperature environment during the molding process, which causes the mold and the insert to undergo small but crucial dimensional changes due to thermal expansion. The traditional clamping method often only fixes the insert from a single direction and can only apply pressure to the insert from a vertical direction or a fixed angle, ignoring the thermal expansion changes of the mold and the insert in a multi-dimensional space, which may further cause the problem of insert displacement. For this reason, the present invention proposes a mold clamping mechanism applied to a tower rotary rotational molding machine. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a mold clamping mechanism applied to a tower rotary rotomolding machine, which solves the above problems.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mold clamping mechanism applied to a tower rotary rotomolding machine, comprising a fixed annular frame, the fixed annular frame is in the shape of a circular ring, four connecting plates in annular and equidistant distribution are fixedly connected to the fixed annular frame, a clamping assembly outer shell is fixedly connected between each two connecting plates on the fixed annular frame, the outer sides of the multiple clamping assembly outer shells are threaded with angle push rods, and the inner sides of the multiple clamping assembly outer shells are provided with mounting rotation grooves, and also include:

[0006] A rotating angle block, which is arranged on the inner wall of the mounting rotating groove and is used to adjust the pressing angle;

[0007] A transverse pressing plate, which is arranged on one side of the upper end of the inner wall of the installation rotating groove corresponding to the rotating corner block, and is used to press the upper side surface of the thin insert;

[0008] A vertical clamping plate is arranged at the lower side of the rotating corner block corresponding to the lower end of the inner wall of the rotating groove for mounting, and is used to clamp the side surface of the thin insert.

[0009] Preferably, one end of the angle pushing rod is fixedly connected to a rotating handle, and the other end of the angle pushing rod extends into the inner cavity where the rotating groove is installed and is fixedly connected to an angle pushing block, the side of the angle pushing block away from the angle pushing rod is curved, and a threaded groove is provided on the side of the angle pushing rod.

[0010] Preferably, the inner wall of the rotating groove is rotatably connected to an end of the angle pushing rod, and a rotating main shaft is fixedly connected to a rotating angle block in the inner cavity of the rotating groove corresponding to the side surface of the rotating main shaft. The rotating angle block is L-shaped, and a lifting screw is movably inserted into the upper side surface of the rotating angle block close to one end of the angle pushing rod, and the lower end of the side surface of the lifting screw extends to the bottom of the rotating angle block and is threadedly connected to a vertical clamping plate, and a horizontal extension device is provided at one end of the rotating angle block away from the angle pushing rod, and a horizontal pressing plate is provided at one end of the horizontal extension device away from the rotating angle block, and a squeezing ball is rotatably connected to the lower end of the side of the vertical clamping plate away from the angle pushing rod.

[0011] Preferably, a return spring is fixedly connected to one side of the vertical pressing plate away from the squeezing ball, and a sliding clamping plate is fixedly connected to the other end of the return spring, and the sliding clamping plate is slidably clamped on the inner wall of the mounting rotation groove.

[0012] Preferably, the lower end of the lifting screw extends to the bottom of the rotating angle block and is threadedly inserted in the vertical clamping plate. Two sliding limit rods symmetrically arranged about the lifting screw are movably inserted on the upper side surface of the rotating angle block near one end of the lifting screw, and the lower end of the sliding limit rod is movably clamped on the vertical clamping plate.

[0013] Preferably, the telescopic threaded rod is fixedly connected to a telescopic mounting plate 1 on one side away from the angle pushing rod, one end of the inner wall of the telescopic mounting plate 1 is rotatably connected to a pair of fork-shaped connecting rods, the other end of the inner wall of the telescopic mounting plate 1 is slidably clamped with two symmetrically arranged rotating slides, the rotating slide is rotatably connected to the other end of the fork-shaped connecting rod, the side of the transverse clamping plate close to the rotating angle block is fixedly connected to a telescopic mounting plate 2, and the structure on the telescopic mounting plate 2 is symmetrically arranged to the telescopic mounting plate 1.

[0014] Preferably, a pair of fork-shaped connecting rods on the telescopic mounting plate one and a pair of fork-shaped connecting rods on the telescopic mounting plate two are hinged to each other, and the two pairs of fork-shaped connecting rods are rotatably connected to linkage rods at the hinge points, and a telescopic threaded rod is threadedly connected between the two linkage rods, and one end of the telescopic threaded rod extends to the outer side surface of a linkage rod and is fixedly connected to an extension handle, and a swivel connecting seat is threadedly connected to the side surface of the linkage rod close to the extension handle, and the swivel connecting seat is cross-shaped, and the vertical end of the swivel connecting seat is movably sleeved on the linkage rod.

[0015] Preferably, two symmetrically arranged mobile shells 2 are fixedly connected to one end of the two sides of the rotating angle block close to the transverse clamping plate, and a mobile shell 1 is movably inserted in each of the mobile shells 2. One end of each of the mobile shells 1 away from the rotating angle block is fixedly connected to the side surface of the transverse clamping plate, and a reinforcing rod is movably inserted in each of the mobile shells 2, and the other end of each of the reinforcing rods is fixedly connected to one end of the mobile shell 1 away from the rotating angle block.

[0016] Preferably, a metal connecting plate is fixedly connected to the upper end of the side surface of the rotating angle block, a metal reinforcing plate is movably inserted in the metal connecting plate, and one end of the lower side surface of the metal reinforcing plate away from the rotating angle block is fixedly connected to the transverse clamping plate.

[0017] Compared with the prior art, the present invention provides a mold clamping mechanism applied to a tower rotary rotomolding machine, which has the following beneficial effects:

[0018] 1. The clamping mechanism used for fixing the chuck-type thin insert on the rotational molding mold can easily adjust the inclination angle of the rotating angle block by rotating the angle push rod, thereby changing the position and clamping direction of the horizontal clamping plate and the vertical clamping plate. This design enables the device to flexibly adapt to thin inserts of various shapes and sizes, greatly improving the flexibility and accuracy of processing. Whether in a complex mold structure or on inserts of different sizes, the device can achieve precise clamping operation to ensure the stability and quality of the insert during the rotational molding process.

[0019] 2. The extrusion ball used in the clamping mechanism for fixing the chuck-type thin insert on the rotational mold has a unique design. Its spherical structure can better adapt to the slight changes in the surface of the insert and ensure uniform distribution of the clamping force. Under the action of the vertical clamping plate and the horizontal clamping plate, the extrusion ball fits tightly to the surface of the insert, effectively preventing the top displacement and side sliding of the insert during the heating process.

[0020] 3. The design of the telescopic mounting plate and the fork-shaped connecting rod of the clamping mechanism used to fix the chuck-type thin insert on the rotational molding mold gives the device the ability to telescope in the horizontal and vertical directions. By rotating the lifting screw and the telescopic threaded rod, the position of the vertical clamping plate and the horizontal clamping plate can be accurately adjusted to adapt to molds and inserts of different sizes, which improves the versatility of the device and makes the processing process more efficient and convenient. Whether in mass production or in personalized customization, this device can be quickly adjusted to the best state to meet different processing needs.

[0021] 4. The metal connecting plate, metal reinforcing plate, movable sleeve and reinforcing rod and other components in the clamping mechanism device used for fixing the chuck-type thin insert on the rotational molding mold together constitute a stable supporting structure, which enhances the connection strength between the rotating angle block and the transverse clamping plate, and also improves the stability and rigidity of the entire device when under pressure. During the clamping process, this supporting structure can effectively disperse and transmit pressure, ensure that the device maintains stable performance, and avoid errors caused by vibration or external force interference.

[0022] 5. The design of the clamping mechanism for fixing the chuck-type thin insert on the rotational mold takes into account the convenience of operation and simplicity of maintenance. The angle push rod, lifting screw rod and telescopic threaded rod are equipped with easy-to-operate turning handles and extension handles, allowing users to easily adjust and control. At the same time, the connection between the various components in the device is simple and clear, and easy to disassemble and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the outer shell of the compression assembly in the present invention;

[0025] Figure 3 It is a cross-sectional schematic diagram of the outer shell of the compression assembly in the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the sliding card plate and the return spring in the present invention;

[0027] Figure 5 It is a schematic structural diagram of a cross-section of a rotating corner block in the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the mobile shell 1 and the mobile shell 2 in the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the horizontal extension device in the present invention.

[0030] In the figure: 1. Fixed annular frame; 2. Connecting plate; 3. Clamping assembly outer shell; 4. Angle push rod; 5. Horizontal clamping plate; 6. Vertical clamping plate; 7. Squeeze ball; 8. Install rotating groove; 9. Angle push block; 10. Rotating main shaft; 11. Horizontal extension device; 12. Lifting screw; 13. Sliding card plate; 14. Reset spring; 15. Sliding limit rod; 16. Metal connecting plate; 17. Metal reinforcing plate; 18. Moving sleeve shell one; 19. Moving sleeve shell two; 20. Reinforcing rod; 21. Telescopic mounting plate one; 22. Telescopic mounting plate two; 23. Rotating slide seat; 24. Fork-shaped connecting rod; 25. Telescopic threaded rod; 26. Rotating connecting seat; 27. Extending handle; 28. Rotating angle block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-7 A mold clamping mechanism for a tower rotary rotomolding machine includes a fixed annular frame 1, which is in a circular ring shape, and is fixedly connected to four connecting plates 2 that are equidistantly distributed in an annular shape, and a clamping component outer shell 3 is fixedly connected between each two connecting plates 2 on the fixed annular frame 1, and the outer sides of the multiple clamping component outer shells 3 are all threadedly plugged with angle push rods 4, and the inner sides of the multiple clamping component outer shells 3 are provided with installation rotation grooves 8, and also include:

[0033] A rotating angle block 28, which is arranged on the inner wall of the mounting rotating groove 8 and is used to adjust the pressing angle;

[0034] A transverse pressing plate 5, which is arranged on one side of the upper end of the inner wall of the rotating groove 8 corresponding to the rotating corner block 28, is used to press the upper side of the thin insert;

[0035] The vertical pressing plate 6 is arranged at the lower side of the rotating corner block 28 corresponding to the lower end of the inner wall of the rotating groove 8 for installing the rotating groove, and is used to press the side surface of the thin insert.

[0036] Furthermore, one end of the angle push rod 4 is fixedly connected with a rotating handle, and the other end of the angle push rod 4 extends to the inner cavity of the installation rotation groove 8 and is fixedly connected with an angle push block 9. The side of the angle push block 9 away from the angle push rod 4 is curved, and the side of the angle push rod 4 is provided with a threaded groove. One end of the angle push rod 4 is provided with a rotating handle that is easy to operate, so that the user can easily rotate the rod. The other end is deeply installed in the rotation groove 8 and is fixedly connected to the angle push block 9. The curved surface design of the angle push block 9 and the rough surface design ensure that it can smoothly and evenly transmit force during the movement, thereby effectively avoiding errors caused by friction or jamming. When the angle push rod 4 is rotated, it will drive the angle push block 9 to move in the installation rotation groove 8, and then drive the rotating angle block 28 to rotate around the rotating main shaft 10, so that the entire clamping assembly can flexibly adapt to inserts of various shapes and sizes.

[0037] Furthermore, the inner wall of the rotating groove 8 is rotatably connected to the end away from the angle pushing rod 4 with a rotating spindle 10, and the side of the rotating spindle 10 is fixedly connected to a rotating angle block 28 in the inner cavity corresponding to the rotating groove 8, and the rotating angle block 28 is L-shaped, and the upper side of the rotating angle block 28 is movably plugged with a lifting screw 12 at one end close to the angle pushing rod 4, and the lower end of the side of the lifting screw 12 extends to the bottom of the rotating angle block 28 and is threadedly connected to a vertical clamping plate 6, and the end of the rotating angle block 28 away from the angle pushing rod 4 is provided with a horizontal extension device 11, and the end of the horizontal extension device 11 away from the rotating angle block 28 is provided with a horizontal clamping plate 5, and the vertical The lower end of the clamping plate 6 on the side away from the angle pushing rod 4 is rotatably connected with an extrusion ball 7, and the rotating main shaft 10 serves as the support and rotation center of the rotating angle block 28, which allows the rotating angle block 28 to rotate around its axis in the installation rotation groove 8; the L-shaped design of the rotating angle block 28 not only provides support for the lifting screw 12, but also affects the working angle of the entire device through changes in its shape and position; the lifting screw 12 is movably connected to the rotating angle block 28 and is connected to the vertical clamping plate 6 by threads. By rotating the lifting screw 12, the up and down position of the vertical clamping plate 6 can be adjusted, thereby controlling its vertical clamping force or distance on the working object.

[0038] Furthermore, a return spring 14 is fixedly connected to the side of the vertical clamping plate 6 away from the squeezing ball 7, and the other end of the return spring 14 is fixedly connected to a sliding card plate 13, which is slidably clamped on the inner wall of the mounting rotation groove 8. The combination of the return spring 14 and the sliding card plate 13 provides the necessary buffering and return force for the vertical clamping plate 6.

[0039] Furthermore, the lower end of the lifting screw 12 extends to the bottom of the rotating angle block 28 and is threadedly inserted into the vertical clamping plate 6. The upper side surface of the rotating angle block 28 near one end of the lifting screw 12 is movably inserted with two sliding limit rods 15 symmetrically arranged with respect to the lifting screw 12. The lower end of the sliding limit rod 15 is movably clamped on the vertical clamping plate 6. After adding the sliding limit rod 15, the function and stability of the device are further enhanced. The main function of the sliding limit rod 15 is to limit the movement trajectory of the vertical clamping plate 6 during the lifting process, ensuring that it can only move up and down along the direction of the sliding limit rod 15. This helps to prevent the vertical clamping plate 6 from deflecting or shaking during the lifting process, thereby improving the stability and accuracy of the device. At the same time, since the sliding limit rods 15 are symmetrically arranged with respect to the lifting screw 12, they can form a stable support structure, further enhancing the stability of the vertical clamping plate 6 during the lifting process. This symmetrical design also helps to balance the force on the vertical clamping plate 6 and reduce deformation or damage caused by uneven force.

[0040] Furthermore, a telescopic mounting plate 21 is fixedly connected to one side of the telescopic threaded rod 25 away from the angle pushing rod 4, a pair of fork-shaped connecting rods 24 are rotatably connected to one end of the inner wall of the telescopic mounting plate 21, and two symmetrically arranged rotating slides 23 are slidably clamped to the other end of the inner wall of the telescopic mounting plate 21, and the rotating slide 23 is rotatably connected to the other end of the fork-shaped connecting rod 24, and a telescopic mounting plate 22 is fixedly connected to one side of the transverse clamping plate 5 close to the rotating angle block 28, and the structure on the telescopic mounting plate 22 is symmetrically arranged with the telescopic mounting plate 21, and the telescopic mounting plate 21 and the telescopic mounting plate 22 serve as the supporting structure of the transverse clamping plate 5, and the transverse clamping plate 5 can be stretched and adjusted in the horizontal direction by driving the telescopic threaded rod 25, which enables the device to adapt to work objects of different widths or sizes and improves the processing flexibility and accuracy.

[0041] Further, a pair of forked connecting rods 24 on the telescopic mounting plate 1 21 and a pair of forked connecting rods 24 on the telescopic mounting plate 2 22 are hinged to each other, and the two pairs of forked connecting rods 24 are rotatably connected to the linkage rods at the hinges, and a telescopic threaded rod 25 is threadedly connected between the two linkage rods, and one end of the telescopic threaded rod 25 extends to the outer side of one linkage rod and is fixedly connected to an extension handle 27, and a rotation connection seat 26 is threadedly connected to the side of the linkage rod near the extension handle 27, and the rotation connection seat 26 is cross-shaped, and the vertical end of the rotation connection seat 26 is movably sleeved on the linkage rod, and the two linkage rods are connected by the telescopic threaded rod 25, and the two pairs of forked connecting rods 24 are connected to each other at the hinges, so as to realize the fine adjustment of the horizontal clamping plate 5 in the horizontal direction. When the extension handle 27 is rotated, the telescopic threaded rod 25 will drive the two linkage rods to move simultaneously, thereby driving the forked connecting rod 24 and the horizontal clamping plate 5 to perform synchronous telescopic movement. This design ensures the balance and consistency of the clamping force on both sides and improves the processing accuracy. The mutual articulation of the fork-shaped connecting rods 24 and the connection of the linkage rods form a stable frame structure, which provides strong support for the transverse clamping plate 5 in the horizontal direction. At the same time, the threaded connection of the telescopic threaded rod 25 also enhances the rigidity of the entire structure, so that the device can remain stable when subjected to a large clamping force.

[0042] Further, two ends of the two sides of the rotating angle block 28 near the transverse clamping plate 5 are fixedly connected with two symmetrically arranged mobile shells 2 19, and the mobile shells 1 18 are movably inserted in the mobile shells 2 19, and the ends of the multiple mobile shells 1 18 away from the rotating angle block 28 are fixedly connected to the side of the transverse clamping plate 5, and the mobile shells 2 19 are movably inserted with reinforcing rods 20, and the other ends of the reinforcing rods 20 are fixedly connected to the ends of the mobile shells 1 18 away from the rotating angle block 28. The sleeve design of the mobile shells 2 19 and the mobile shells 1 18, as well as the connection of the reinforcing rods 20, form a stable support structure. This structure not only enhances the connection strength between the rotating angle block 28 and the transverse clamping plate 5, but also improves the stability of the entire device when it is under pressure. The connection of the reinforcing rods 20 ensures that the relative position between the mobile shells 1 18 and the mobile shells 2 19 remains unchanged. Even in the horizontal movement process, the reinforcing rods 20 can effectively prevent the misalignment or offset between the two, thereby ensuring the position accuracy of the transverse clamping plate 5 when clamping the work object.

[0043] Furthermore, a metal connecting plate 16 is fixedly connected to the upper end of the side of the rotating angle block 28, and a metal reinforcing plate 17 is movably inserted in the metal connecting plate 16. The lower side of the metal reinforcing plate 17 is fixedly connected to the transverse clamping plate 5 at one end away from the rotating angle block 28. The metal connecting plate 16 is fixedly connected to the upper end of the side of the rotating angle block 28, providing a solid connection point between the rotating angle block 28 and the transverse clamping plate 5. The metal reinforcing plate 17 is movably inserted in the metal connecting plate 16 and fixedly connected to the transverse clamping plate 5, thus forming a strong supporting structure, which significantly enhances the structural strength of the entire device and reduces the shaking or deformation that may occur during the clamping process.

[0044] Working principle: When using this device to clamp the fixed chuck-type thin insert on the rotational molding mold, first, by rotating the angle push rod 4, the torque is transmitted through the thread inside the rod, so that the angle push block 9 connected to it moves smoothly in the installation rotation groove 8, thereby driving the rotating angle block 28 to rotate around the rotating main axis 10. The curved surface design of the angle push block 9 ensures that it can evenly transmit force during the movement, avoiding errors caused by friction or jamming. At the same time, this rotation action is the key step for the clamping mechanism to adjust the clamping angle, which enables the entire clamping assembly to flexibly adapt to inserts of different shapes and sizes.

[0045] When the rotating angle block 28 rotates to a suitable position, it drives the horizontal extension device 11 and the transverse clamping plate 5 to move together. The extrusion ball 7 on the transverse clamping plate 5 can better adapt to the slight changes in the surface of the insert due to its unique spherical design, ensuring that the clamping force is evenly distributed, thereby effectively preventing the top displacement of the insert due to thermal expansion during the heating process. At the same time, driven by the rotating angle block 28, the vertical clamping plate 6 also begins to move. The lower end of the vertical clamping plate 6 is also equipped with an extrusion ball 7. When the extrusion ball 7 contacts the side of the insert, it will fit the surface of the insert tightly due to its elastic deformation, forming an effective side clamping defense line. This design not only enhances the clamping effect, but also reduces the stress concentration caused by direct rigid contact, protecting the integrity of the insert and the mold.

[0046] The design of the telescopic mounting plate 1 21, the telescopic mounting plate 22, the fork-shaped connecting rod 24 and the lifting screw 12 enables the clamping mechanism to have a certain telescopic ability in the horizontal and vertical directions, so that it can have good clamping ability and clamping length when facing molds and inserts of different sizes. The specific operation is that by rotating the rotating handle on the lifting screw 12, the vertical clamping plate 6 can be moved downward by thread transmission, so that the device can withstand molds and inserts of different lengths; the telescopic threaded rod 25 is driven to rotate by rotating the extension handle 27, and the angle of multiple transmission plates on the two pairs of fork-shaped connecting rods 24 can be adjusted by rotating the connecting seat 26, so as to push the telescopic mounting plate 1 21 and the telescopic mounting plate 2 22 to extend or contract, so as to achieve the purpose of extending the horizontal clamping plate 5 in the horizontal direction to meet the clamping requirements of the upper side of different inserts.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mold clamping mechanism for a tower rotary rotomolding machine, comprising a fixed annular frame (1), characterized in that: The fixed annular frame (1) is in the shape of an annulus, and four connecting plates (2) are fixedly connected to the fixed annular frame (1) and are distributed in an annular shape at equal intervals. A clamping assembly outer shell (3) is fixedly connected between each two connecting plates (2) on the fixed annular frame (1), and the outer side surfaces of the plurality of clamping assembly outer shells (3) are all threadedly plugged with angle push rods (4), and the inner side surfaces of the plurality of clamping assembly outer shells (3) are provided with mounting rotation grooves (8), and further comprising: A rotating angle block (28) is arranged on the inner wall of the mounting rotating groove (8) and is used to adjust the pressing angle; A transverse pressing plate (5) is arranged on one side of the upper end of the inner wall of the mounting rotating groove (8) corresponding to the rotating corner block (28) and is used to press the upper side surface of the thin insert; A vertical pressing plate (6) is arranged at the lower end of the inner wall of the installation rotation groove (8) and corresponds to the lower side of the rotation angle block (28), and is used to press the side surface of the thin insert.

2. The mold clamping mechanism used in a tower rotary rotomolding machine according to claim 1, characterized in that: One end of the angle push rod (4) is fixedly connected to a rotating handle, and the other end of the angle push rod (4) extends into the inner cavity of the mounting rotation groove (8) and is fixedly connected to an angle push block (9), a side of the angle push block (9) away from the angle push rod (4) being a curved surface, and a threaded groove is provided on a side surface of the angle push rod (4).

3. The mold clamping mechanism used in a tower rotary rotomolding machine according to claim 1, characterized in that: The inner wall of the rotating groove (8) is rotatably connected to one end of the angle push rod (4), and a rotating main shaft (10) is fixedly connected to a rotating angle block (28) in the inner cavity of the rotating groove (8) corresponding to the side surface of the rotating main shaft (10). The rotating angle block (28) is L-shaped, and a lifting screw (12) is movably inserted into the upper side surface of the rotating angle block (28) near one end of the angle push rod (4). The lower end of the side surface of the lifting screw (12) extends to the bottom of the rotating angle block (28) and is threadedly connected to a vertical clamping plate (6). The end of the rotating angle block (28) away from the angle push rod (4) is provided with a horizontal extension device (11), and the end of the horizontal extension device (11) away from the rotating angle block (28) is provided with a transverse clamping plate (5), and the lower end of the vertical clamping plate (6) away from the angle push rod (4) is rotatably connected to a squeezing ball (7).

4. The mold clamping mechanism used in a tower rotary rotomolding machine according to claim 3, characterized in that: A return spring (14) is fixedly connected to one side of the vertical pressing plate (6) away from the squeezing ball (7), and a sliding clamping plate (13) is fixedly connected to the other end of the return spring (14). The sliding clamping plate (13) is slidably clamped on the inner wall of the mounting rotation groove (8).

5. The mold clamping mechanism used in a tower rotary rotomolding machine according to claim 3 is characterized in that: The lower end of the lifting screw (12) extends to the bottom of the rotating angle block (28) and is threadedly inserted into the vertical clamping plate (6); one end of the upper side surface of the rotating angle block (28) close to the lifting screw (12) is movably inserted with two sliding limit rods (15) symmetrically arranged with respect to the lifting screw (12); the lower end of the sliding limit rod (15) is movably clamped on the vertical clamping plate (6).

6. The mold clamping mechanism used in a tower rotary rotomolding machine according to claim 1, characterized in that: A telescopic threaded rod (25) is provided on one side of the angle push rod (4); the telescopic threaded rod (25) is fixedly connected to a telescopic mounting plate (21) on a side away from the angle push rod (4); one end of the inner wall of the telescopic mounting plate (21) is rotatably connected to a pair of fork-shaped connecting rods (24); the other end of the inner wall of the telescopic mounting plate (21) is slidably engaged with two symmetrically arranged rotating slides (23); the rotating slides (23) are rotatably connected to the other end of the fork-shaped connecting rod (24); the side of the transverse clamping plate (5) close to the rotating angle block (28) is fixedly connected to a telescopic mounting plate (22); the structure on the telescopic mounting plate (22) is symmetrically arranged to the telescopic mounting plate (21).

7. The mold clamping mechanism used in a tower rotary rotomolding machine according to claim 6, characterized in that: A pair of fork-shaped connecting rods (24) on the telescopic mounting plate 1 (21) and a pair of fork-shaped connecting rods (24) on the telescopic mounting plate 2 (22) are hinged to each other, and the hinges of the two pairs of fork-shaped connecting rods (24) are rotatably connected to linkage rods, and a telescopic threaded rod (25) is threadedly connected between the two linkage rods, and one end of the telescopic threaded rod (25) extends to the outer side surface of a linkage rod and is fixedly connected to an extension handle (27), and a rotatable connecting seat (26) is threadedly connected on the side surface of the linkage rod close to the extension handle (27), and the rotatable connecting seat (26) is cross-shaped, and the vertical end of the rotatable connecting seat (26) is movably sleeved on the linkage rod.

8. The mold clamping mechanism used in a tower rotary rotomolding machine according to claim 3, characterized in that: Two ends of both sides of the rotating angle block (28) close to the transverse clamping plate (5) are fixedly connected to two symmetrically arranged moving sleeves (19), and moving sleeves (18) are movably inserted into the moving sleeves (19). The ends of the moving sleeves (18) away from the rotating angle block (28) are fixedly connected to the side surface of the transverse clamping plate (5), and the moving sleeves (19) are movably inserted into reinforcing rods (20), and the other ends of the reinforcing rods (20) are fixedly connected to the ends of the moving sleeves (18) away from the rotating angle block (28).

9. The mold clamping mechanism used in a tower rotary rotomolding machine according to claim 3, characterized in that: A metal connecting plate (16) is fixedly connected to the upper end of the side surface of the rotating angle block (28), a metal reinforcing plate (17) is movably inserted into the metal connecting plate (16), and one end of the lower side surface of the metal reinforcing plate (17) away from the rotating angle block (28) is fixedly connected to the transverse clamping plate (5).

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